Neither notably warm, cold, wet nor dry, Colmar Manor sits near the middle of U.S. towns
High summer brings afternoon highs near 88°. July is the wettest month, February the driest. Summer afternoons here are warmer than in 70% of U.S. towns. Warm coats and heating bills mark the months from November to March, when means dip under 50°.
A year in Colmar Manor at a glance
Each month’s typical high and low, and what it brings.
What stands out about Colmar Manor’s climate
Compared with towns across the U.S., with Colmar Manor’s place in Maryland beside it.
What a year in Colmar Manor feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 224 frost-free days a year
In half of years the last 32° night comes by March 29 and the first by November 8. Frost and day counts come from NOAA’s station at Natl Arboretum Dc, MD, 1.7 miles from the town’s center, at about the same height.
The 2023 USDA map puts Colmar Manor’s center in zone 7b: the coldest night of a typical winter, averaged over 1991–2020, reaches about 10°. Plant labels use the zone; frost dates tell you when to plant.
Freezing nights by month
Average nights at or below 32°
90° days by month
Average days at 90° or more
About 10 inches of snow a winter
Snow, measured at Natl Arboretum Dc, MD, falls mostly in January. Precipitation (rain plus melted snow) adds up to 45 inches a year; July is the wettest month and February the driest. Rain or snow falls on about 121 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Colmar Manor
71% of the work is heating. Months averaging under 55° run from November through March.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Natl Arboretum Dc, MD.
Living with Colmar Manor’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
224 frost-free days in zone 7b. The last frost comes by Mar 29 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Nov 8.
Months with highs of 62–84° and lows of 40° or more: April, May, September and October. 0.9 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Colmar Manor from natural hazards, river flooding is the largest share (63%); heat waves, cold waves, winter storms and ice storms together are 13%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Colmar Manor and its neighbors
Every town next door is within a degree of Colmar Manor in January and July, closer than the 5 km grid can tell apart. Tap a town to see its climate.
Climates most like Colmar Manor’s, farther away
TownRatings’ own comparison of NOAA 1991–2020 normals, not a NOAA product: places of 5,000+ at least 150 miles away, one per state, closest on January low, July high, precipitation and snow.
| Town | Jan. low | July high | Precip. | Snow |
|---|---|---|---|---|
| Colmar Manor, MD | 26° | 88° | 45" | 9.7" |
| Collinsville, VA | 27° | 88° | 46" | 9.4" |
| Harrison, AR | 26° | 89° | 47" | 9.5" |
| Mount Vernon, IN | 25° | 88° | 47" | 8.4" |
| Pea Ridge, WV | 25° | 87° | 45" | 9.6" |
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value. Snow and frost-free days come from the nearest weather station, so neighbors often share them.
Warmer than it used to be
The last 30 years in Colmar Manor averaged 1.7° warmer than the 1900s. The biggest change is in December (+2.8°).
A bigger shift than in 71% of U.S. towns.
Change by month
The two periods overlap (1991–2000 is in both), which makes the gap a little smaller than it would be between separate periods.
How Colmar Manor compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Colmar Manor’s place among Maryland’s.
Colmar Manor weather by month
Highs, lows and precipitation from NOAA’s grid at Colmar Manor’s center; snow, wet days and snow on the ground from Natl Arboretum Dc, MD. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 44° | 26° | 2.9" | 4.7" | 10 | 3 | 27° – 42° |
| February | 47° | 28° | 2.6" | 2.3" | 9 | 5 | 27° – 45° |
| March | 55° | 35° | 3.8" | 1.4" | 10 | 2 | 39° – 55° |
| April | 67° | 45° | 3.4" | 0.0" | 12 | 0 | 52° – 61° |
| May | 76° | 54° | 4.2" | 0.0" | 12 | 0 | 60° – 71° |
| June | 84° | 63° | 4.3" | 0.0" | 11 | 0 | 70° – 78° |
| July | 88° | 68° | 4.5" | 0.0" | 11 | 0 | 73° – 82° |
| August | 86° | 67° | 3.9" | 0.0" | 10 | 0 | 72° – 80° |
| September | 80° | 60° | 4.3" | 0.0" | 10 | 0 | 66° – 74° |
| October | 69° | 48° | 3.9" | 0.0" | 9 | 0 | 54° – 65° |
| November | 57° | 37° | 3.1" | 0.0" | 8 | 0 | 41° – 52° |
| December | 48° | 30° | 3.7" | 1.3" | 9 | 2 | 30° – 50° |
| Year | 67° | 47° | 44.6" | 9.7" | 121 | 12 |
How much a month can swing
A normal is an average. December swings the most: from 1991 to 2020 its average ranged from 30° to 50°. September is the most reliable, staying within 7°.
Where Colmar Manor’s numbers come from
Normals are 30-year averages, not a forecast. How TownRatings reads climate data →
- Temperatures and precipitation: NOAA’s gridded 1991–2020 normals for the 5 km cell at Colmar Manor’s center.
- Snow: Natl Arboretum Dc, MD (NOAA station in town).
- Frost, freezing nights, 90° and 100° days, heating and cooling: Natl Arboretum Dc, MD, 1.7 miles from the town’s center, at about the same height; the nearest station that passes our checks for distance, height and agreement with the grid.
- Growing zone: USDA Plant Hardiness Zone Map, 2023. USDA Agricultural Research Service and PRISM Group, Oregon State University, prism.oregonstate.edu/phzm, accessed 8 Oct 2026.
- Then and now: NOAA’s gridded normals for 1901–2000 at the same cell.
- Storms and extremes: FEMA National Risk Index (expected annual losses to buildings).
Common questions about Colmar Manor’s climate
What is the weather like in Colmar Manor?
A typical July afternoon reaches 88°, a January night drops to 26°, and about 10 inches of snow falls in a normal winter. Milder January nights than 66% of U.S. towns; hotter July afternoons than 70% of U.S. towns.
How cold does it get in Colmar Manor in winter?
January nights average 26°. About 84 nights a year reach 32° or below. In the coldest January of the last 30 years the month averaged 27°.
How much snow does Colmar Manor get?
About 9.7 inches in a normal winter at Natl Arboretum Dc, MD, most of it in January, with snow on the ground about 12 days a year.
How hot does it get in Colmar Manor?
July, with a typical high of 88° and a low of 68°. About 48 days a year reach 90° and 2 reach 100° (Natl Arboretum Dc, MD).
When is the first and last frost in Colmar Manor?
In half of years the last spring frost (32°) comes by March 29 and the first fall frost by November 8, about 224 frost-free days, at Natl Arboretum Dc, MD.
What growing zone is Colmar Manor in?
Zone 7b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 10°.
What is the best time of year to visit Colmar Manor?
By one simple rule (highs of 62–84° and lows of 40° or more), April, May, September and October. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Colmar Manor getting warmer?
Yes: 1991–2020 averaged 1.7° warmer than 1901–2000 on NOAA’s grid. A bigger shift than 71% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Colmar Manor.
Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000; USDA/PRISM 2023 hardiness zones; FEMA National Risk Index. Today’s forecast: National Weather Service.